Hardware Installation Manual 44 Document #: LTRT-10453
Mediant 500L MSBR
6.4.2 Cabling FXO Interfaces
The procedure below describes how to cable the device's FXO interface. FXO is the
interface replacing the analog telephone and connects to a Public Switched Telephone
Network (PSTN) line from the CO or to a PBX. The FXO is designed to receive line voltage
and ringing current, supplied from the CO or the PBX (similar to an analog telephone).
Warnings:
• To protect against electrical shock and fire, use a minimum 26-AWG wire to the
connect FXO port to the PSTN.
• Make sure that the FXO port is connected to the appropriate, external device;
otherwise, damage to the device may occur.
• The FXO port is considered TNV-3.
Note: FXO interface is a customer-ordered item which is supported only on specific
hardware configurations.
For more information, contact your AudioCodes sales
representative.
Cable specification:
Cable: 26-AWG wire
Connector: RJ-11
Connector Pinouts:
Figure 6-14: RJ-11 Connector Pinouts for FXO Interface
To connect an FXO interface:
1. Connect one end of an RJ-11 cable to an FXO port, located on the rear panel and
labeled FXO.
Figure 6-15: Cabling FXO Interfaces
2. Connect the other end of the cable to the required telephone interface (e.g., telephone
exchange analog line or PBX extension).
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